AIDS is a tremendous problem, deaths from HIV infection and AIDS a tremendous problem in Africa and other parts of the world.

艾滋病是一个巨大的问题,在非洲和世界其他地方,艾滋病毒感染和艾滋病带来的死亡,是一个巨大的问题

耶鲁公开课 - 生物医学工程探索课程节选

There's great inequality among the elderly and that's a problem.

老年人间存在巨大的不平等,这是一个问题。

耶鲁公开课 - 金融市场课程节选

But finally, Reiner says, well, thank you for visiting us, it's all very wonderful, but you know our audience would really like to know; it seems like a simple question but it's awfully hard to understand, but how can a great, big, enormous, heavy thing like this airplane get off the ground?

但最后 雷纳说到,谢谢你的来访,太棒了,但你知道吗,我们的观众非常想知道,这问题貌似简单,但却很难让人明白,问题是,像这么一个巨大且沉重的飞机,是如何飞起来的呢

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